Wet tissue packaging unit

ABSTRACT

A wet tissue packaging unit provided with: a storage container, which is capable of storing a continuous body of wet tissues in which separating parts are formed at each of prescribed intervals; a take-out port formation member having a take-out port formation part, which is attached to the opening of the storage container and in which is formed a take-out port for imparting resistance when the continuous body of wet tissues passes therethrough, and a storage space capable of storing the leading end of the continuous body of wet tissues that passed through the take-out port; and a cover section that freely opens and closes from the outside of the storage space, wherein there is provided a linking part for linking the storage space of the take-out port formation member and the space inside the storage container in an area other than the take-out port.

TECHNICAL FIELD

The present invention relates to a wet tissue packaging unit thataccommodates and packs a wet tissue continuing material body formed by aplurality of wet tissues, in an accommodation container.

BACKGROUND ART

Hitherto, a wet tissue used for wiping hands or buttocks of babies,patients, and elderly people is widely known. The wet tissue is formedby impregnating a chemical solution and the like into a ground fabric.The wet tissue is accommodated in a sealed accommodation container sothat the ground fabric may be maintained in a wet state by the chemicalsolution and the like, and is formed to be extracted from theaccommodation container as needed basis.

As the accommodation container, a cylindrical bottle type container hasbeen widely used from the past. In many cases, the bottle typeaccommodation container accommodates a wet tissue continuing materialbody which is wound in a roll shape. The wet tissue continuing materialbody is provided with separating portions (i.e., dividing portions) bybreaks of perforation lines or the like at predetermined intervals, andwhen the wet tissue continuing material body is divided at the dividingportion by cutting a part of the wet tissue continuing material body atthe dividing portion or the like, a sheet-like wet tissue is obtained.

In recent years, instead of the bottle type wet tissue packaging unit, abag type wet tissue packaging unit provided with a bag-likeaccommodation container has been used in many cases. The bag type wettissue packaging unit accommodates an interfolded wet tissue continuingmaterial body in a bag body and is formed so that wet tissues formingthe wet tissue continuing material body are extracted to the outsidefrom an opening which is opened to the bag body. The opening of the bagbody is formed so that a wet tissue is separated from the wet tissuecontinuing material body at the dividing portion formed in the wettissue continuing material body. Further, the bag body is generallyprovided with a lid for opening and closing the opening. As the lid, forexample, a flap-like lid which is formed by a film material such amaterial of the bag body has been widely used (e.g., Patent Literatures1 and 2).

CITATION LIST Patent Literatures Patent Literature 1: JP 2004-196303 APatent Literature 2: JP 2010-173649 A SUMMARY OF INVENTION TechnicalProblem

In the bag type wet tissue packaging unit formed as described above, thelid is attached to the vicinity of the surface of the bag body to closethe opening when a user does not extract a wet tissue. In the wet tissuepackaging unit, the inside of the bag body is kept in a sealed state bythe lid such that the chemical solution and the like impregnated intothe wet tissue accommodated in the bag body are prevented fromvolatilizing.

In addition, at a position inside the lid, an extraction hole whichapplies a friction resistance to the wet tissue continuing material bodywhen the wet tissue packaging unit is drawn out while passingtherethrough is formed. Then, when a predetermined or higher resistanceis applied to the wet tissue continuing material body during theextraction, the wet tissue continuing material body is divided at thedividing portion, which is close to the drawing end, due to theresistance.

However, in the bag type wet tissue packaging unit, when the wet tissueis consumed, the volume of the wet tissue continuing material bodyinside the bag body decreases, the wet tissue continuing material bodyeasily passes and hence the timing at which the wet tissue is divided atthe dividing portion is delayed. Then, the front end of the wet tissuecontinuing material body that is divided and remains is excessivelydrawn out from the opening which has to be sealed by the lid, and thewet tissue packaging unit may not be reliably sealed. Accordingly, thereis a problem in that the wet tissue may not be maintained in a wetstate.

The present invention is made in view of such problems, and an objectthereof is to provide a wet tissue packaging unit, i.e. a wet tissuepackage, capable of further sealing an accommodation container andmaintaining a wet tissue accommodated in the accommodation container ina wet state.

Solution to Problem

The present invention may be summarized as below.

(1) A wet tissue packaging unit including: an accommodation containerthat accommodates a wet tissue continuing material body having adividing portion formed therein at a predetermined interval, andincludes an opening formed to draw out a wet tissue divided from the wettissue continuing material body at the dividing portion to the outside;an extraction hole forming member that is attached to the opening of theaccommodation container and includes an extraction hole forming portionhaving an extraction hole formed to apply a resistance when the wettissue continuing material body passes therethrough and an accommodationspace which accommodates a front end of the wet tissue continuingmaterial body that passes through the extraction hole; a lid that isprovided at the outside of the accommodation space so as to freely closeand open the accommodation space; and a communicating portion thatallows the accommodation space of the extraction hole forming member anda space in the accommodation container to communicate with each other inan area excluding the extraction hole.

(2) The wet tissue packaging unit according to (1), wherein thecommunicating portion is provided in a peripheral edge area of a bottomportion of the accommodation space.

(3) The wet tissue packaging unit according to (2), wherein theextraction hole forming portion is formed in a plate that is convexlycurved toward the inner side of the accommodation container, and thecommunicating portion is formed by the convexly swollen area.

(4) The wet tissue packaging unit according to any of (1) to (3),wherein the attachment hole forming portion is supported by theattachment hole forming member in a cantilevered manner, and thecommunicating portion is formed or is widened as a free end of theattachment hole forming portion is turned toward the internal space ofthe accommodation container on the cantilevered portion as the center.

(5) The wet tissue packaging unit according to (1), wherein theextraction hole forming member is attached to the accommodationcontainer by allowing an attachment surface of the extraction holeforming member to face an inner surface of the accommodation container.

Advantageous Effects of Invention

According to the wet tissue packaging unit of the present invention,even when the timing at which the wet tissue continuing material body isdivided at the dividing portion is delayed and hence the extra front endportion of the wet tissue continuing material body is drawn out and islengthened in the accommodation space, the front end portion of the wettissue continuing material body may be pushed into the accommodationcontainer through the communicating portion so as to be relieved. Sincethe lid is reliably closed and the accommodation container is sealed, itis possible to prevent the chemical solution and the like impregnatedinto the wet tissue continuing material body accommodated in theaccommodation container from volatilizing. Further, according to the wettissue packaging unit of the present invention, it is possible toprovide the wet tissue in a state where the chemical solution and thelike are always impregnated therein for a user.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is an external perspective view illustrating the externalconfiguration of a wet tissue packaging unit according to a firstembodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1.

FIGS. 3A and 3B are views illustrating the configuration of a wet tissuecontinuing material body, FIG. 3A is a partially enlarged viewillustrating the configuration of a separating portion of the wet tissuecontinuing material body, and FIG. 3B is an explanatory viewillustrating the position of the separating portion of the wet tissuecontinuing material body.

FIGS. 4A and 4B are schematic views illustrating another embodiment of awet tissue continuing material body, FIG. 4A is a view illustrating thewet tissue continuing material body which is folded in a so-calledZ-shape, and FIG. 4B is a view illustrating the wet tissue continuingmaterial body which is folded in a so-called WZ-shape.

FIGS. 5A and 5B are external perspective views illustrating the externalconfiguration of an extraction hole forming member provided with a lid,FIG. 5A is an external perspective view illustrating a state where thelid is closed, and FIG. 5B is an external perspective view illustratinga state where the lid is opened.

FIGS. 6A and 6B are external perspective views illustrating the externalconfiguration of an extraction hole forming member provided with a lid,FIG. 6A is an external perspective view illustrating a state where thelid is opened and a partitioning portion is removed, and FIG. 6B is anexternal perspective view illustrating the external configuration in acase where the extraction hole forming member is seen from the lowersurface thereof.

FIGS. 7A and 7B are cross-sectional views of the extraction hole formingmember, FIG. 7A is a cross-sectional view taken along the line B-B ofFIG. 5B, and FIG. 7B is a cross-sectional view taken along the line C-Cof FIG. 6A.

FIGS. 8A, 8B, and 8C are explanatory views illustrating a procedure ofremoving the partitioning portion, FIG. 8A is an explanatory viewillustrating a state before the partitioning portion is removed, FIG. 8Bis an explanatory view illustrating a state where the partitioningportion is being removed, and FIG. 8C is an explanatory viewillustrating a state where the partitioning portion is removed.

FIGS. 9A and 9B are explanatory views illustrating a procedure when awet tissue is extracted and the operational effects of the wet tissuepackaging unit according to the present invention, FIG. 9A is anexplanatory view illustrating a state of the wet tissue packaging unitat the time of putting a finger into a pinching hole, and FIG. 9B is anexplanatory view illustrating a state where the front end of the wettissue continuing material body is being pinched.

FIG. 10 is an explanatory view illustrating a state where the wet tissuecontinuing material body is drawn out while passing through anextraction hole and the like.

FIGS. 11A, 11B, and 11C are explanatory views illustrating a procedurewhen a wet tissue is extracted and disclosing theoperation/working-effect of the wet tissue packaging unit according tothe present invention, FIG. 11A is an explanatory view illustrating astate where a wet tissue is being extracted from the pinching hole, FIG.11B is an explanatory view illustrating a state where the wet tissue isextracted, and FIG. 11C is an explanatory view illustrating a statewhere wet tissues are accommodated in an accommodation space.

FIGS. 12A and 12B are views illustrating the external configuration ofan extraction hole forming member of a wet tissue packaging unitaccording to a second embodiment of the present invention, FIG. 12A isan external perspective view illustrating a state where a lid is opened,and FIG. 12B is a top view illustrating a state where a closing portionis removed.

FIGS. 13A and 13B are external perspective views illustrating anextraction hole forming member of a wet tissue packaging unit accordingto a third embodiment of the present invention, FIG. 13A is an externalperspective view illustrating a state where a lid is closed, and FIG.13B is an external perspective view illustrating a state where the lidis opened.

FIGS. 14A and 14B are external perspective views illustrating theexternal configuration of an extraction hole forming member providedwith a lid, FIG. 14A is an external perspective view illustrating astate where the lid is opened and a partitioning portion is removed, andFIG. 14B is an external perspective view illustrating the externalconfiguration in a case where the extraction hole forming member is seenfrom the lower surface thereof.

FIGS. 15A, 15B, and 15C are explanatory views illustrating a procedureof extracting a wet tissue and illustrating the operation of a wettissue packaging unit according to a third embodiment, FIG. 15A is anexplanatory view illustrating a state before the wet tissue is drawnout, FIG. 15B is an explanatory view illustrating a state where the wettissue is being drawn out, and FIG. 15C is an explanatory viewillustrating a state where wet tissues are accommodated in anaccommodation space.

FIGS. 16A and 16B are external perspective views illustrating anextraction hole forming member of a wet tissue packaging unit accordingto a fourth embodiment of the present invention, FIG. 16A is an externalperspective view illustrating a state where a lid is opened and apartitioning portion is removed, and FIG. 16B is an external perspectiveview illustrating the external configuration in a case where theextraction hole forming member is seen from the lower surface thereof.

FIGS. 17A, 17B, and 17C are explanatory views illustrating the operationof the wet tissue packaging unit according to the fourth embodiment,FIG. 17A is an explanatory view illustrating a state before a wet tissueis drawn out, FIG. 17B is an explanatory view illustrating a state wherethe wet tissue is being drawn out, and FIG. 17C is an explanatory viewillustrating a state where wet tissues are accommodated in anaccommodation space.

DESCRIPTION OF EMBODIMENTS

The configuration of a first embodiment of a wet tissue packaging unit,i.e. a wet tissue package, according to the present invention will bedescribed with reference to FIGS. 1 to 11C. Further, it is assumed thatthe up-down direction, the forward-rearward direction (or front-backdirection), and the right-left direction in the present specificationindicate the up-down direction, the forward-rearward direction, and theright-left direction illustrated in FIG. 1, respectively. Furthermore anexample, in which a bag body is used as one kind of accommodationcontainer, is described in the present specification. Any member otherthan the bag body may be arbitrarily selected to be used as theaccommodation container. For example, as the accommodation container, acontainer that is formed of a resin material such as plastic may beused. In the present specification, the “unused item of the wet tissuepackaging unit” indicates that a wet tissue continuing material body, ora continuous body of wet tissues, accommodated in the accommodationcontainer in the manufacturing process has never been extracted from theaccommodation container and a partitioning portion and a closing portionto be described later are not removed.

As illustrated in FIG. 1, a wet tissue packaging unit 1 according tothis embodiment includes a bag body 3 (i.e., accommodation container)having an opening 2 that is opened to the upper portion thereof, anextraction hole forming member 4 which is attached to the inner surfaceof the bag body 3 by an arbitrary method such as hot-melt, and a lid 5which is attached to the extraction hole forming member 4. Further, asillustrated in FIG. 2, the wet tissue packaging unit 1 accommodates awet tissue continuing material body 6 inside the bag body 3.

First, the configuration of the wet tissue continuing material body 6will be described. In the present specification, the “wet tissuecontinuing material body” indicates a wet tissue continuing materialbody that is piled in a folded shape by a method to be described laterand is accommodated in the bag body 3, and a “wet tissue” indicates botha sheet-like tissue separated from the wet tissue continuing materialbody 6 and a sheet-like tissue forming the wet tissue continuingmaterial body 6. This embodiment and second to fourth embodiments to bedescribed later are described by using a wet tissue continuing materialbody that is piled in a folded shape as an example of the wet tissuecontinuing material body, but the configuration of the wet tissuecontinuing material body is not limited thereto. For example, as the wettissue continuing material body, a body that is wound in a roll shape orhas the other configurations may be used.

The wet tissue continuing material body 6 is formed by impregnating achemical solution and the like into a ground fabric formed by paper madefrom synthetic fabric or natural fabric, woven cloth, or non-wovencloth. As the chemical solution and the like, alcohol, water, or themixture thereof may be exemplified. Further, the chemical solution maybe arbitrarily selected from perfume, antibacterial agent, refresher,surfactant, antiseptic agent, pigment, antifoam agent, antioxidizingagent, clarifying agent, solubilizing agent, pH adjuster, and the likeand mixed therewith. Furthermore, the above-described materials of theground fabric and the chemical solution and the like forming the wettissue continuing material body 6 are merely examples, and the materialsother than the above-described materials may be arbitrarily selected tobe used.

Structures of the wet tissue continuing material body 6 include bothfollowed structures. In one kind of the structures, a wet tissuecontinuing material body is formed so that wet tissues are connected toeach other by the perforation lines or the like, and in another kind ofthe structures, a wet tissue continuing material body that is formed sothat each of separate wet tissues is bent and folded in a Z-shape or thelike to be described later and the plurality of folded wet tissuescontact one another. In addition, in the present specification, theseparation of the wet tissue from the wet tissue continuing materialbody 6 indicates that, for example, in a case where the wet tissues areconnected by the perforation lines or the like, the wet tissuecontinuing material body 6 is torn at the position of the perforationlines or the like and a portion that becomes the wet tissue is separatedfrom the wet tissue continuing material body 6. Further, the separationindicates that, in a case where the wet tissue continuing material body6 is formed to have a structure in which each of the separate wettissues is appropriately folded in a Z-shape to be described later andthe plurality of wet tissues contact one another, the front end ofsingle wet tissue is took off from the contact portion of the pluralityof wet tissues so as to be separated from the wet tissue continuingmaterial body 6. Furthermore, a portion where the wet tissue isseparated from the wet tissue continuing material body 6 is called adividing portion.

A specific example of the wet tissue continuing material body 6 will bedescribed. The wet tissue continuing material body 6 illustrated inFIGS. 3A and 3B includes first turnback portions 8 and second turnbackportions 9 as a plurality of turnback portions and is piled in acontinuously folded shape. The wet tissue continuing material body 6 isprovided with separating portions 10 (i.e., dividing portions) atpredetermined intervals. The separating portion 10 is formed to beseparated (i.e., divided) by a tensile force that is applied when thefront end of the wet tissue continuing material body 6 is drawn out.FIG. 3A illustrates an example of the separating portion 10 of the wettissue continuing material body 6 according to this embodiment. Theseparating portion 10 is formed to be separated by a tensile forceapplied to the wet tissue continuing material body 6 when the front endof the wet tissue continuing material body 6 is drawn out. Asillustrated in FIG. 3A, the separating portion 10 is provided with aplurality of spaces 11 at predetermined intervals in the right-leftdirection of the wet tissue continuing material body 6, and connectingportions 12 which connect the wet tissues 7 forming the wet tissuecontinuing material body 6 are formed between the spaces 11. In thisembodiment, the connecting portions 12 are formed at three positionswith respect to the right-left direction of the wet tissue continuingmaterial body 6, but the shape of the connecting portion 12 is notlimited thereto. Further, the separating portion 10 may be formed to beseparated when a tensile force is applied thereto. For example, theseparating portion 10 may be formed in a perforation line shape byreducing the interval between the space 11 and the connecting portion 12or in the other shapes.

FIG. 3B is an explanatory view illustrating where the separating portion10 is located in the wet tissue continuing material body 6. In thisdrawing, the points indicated by black circles represent the positionsof the separating portions 10. As illustrated in FIG. 3B, the wet tissuecontinuing material body 6 is formed so that the separating portion 10is located at the center portion between the first turnback portion 8and the second turnback portion 9, and as the vertical relation, aportion with the separating portion 10 and a portion without theseparating portion 10 are alternated.

In the above-described example, the case where the separating portion 10is formed as the dividing portion in the wet tissue continuing materialbody 6. However, the shape of the wet tissue continuing material body 6is not limited thereto and may be formed in the other shapes.Specifically, as exemplified below, the wet tissue continuing materialbody 6 may be formed so that a predetermined portion where two foldedseparate wet tissues overlap each other becomes the separating portion(i.e., the dividing portion). An example of the configuration of anothershape of the wet tissue continuing material body 6 is illustrated inFIGS. 4A and 4B. FIG. 4A illustrates a wet tissue continuing materialbody which is folded in a so-called Z-shape, and FIG. 4B illustrates theconfiguration of a wet tissue continuing material body which is foldedin a so-called WZ-shape. Further, the structure of folding the wettissue continuing material body 6 may be a structure in which when a wettissue 7 is raised, the next wet tissues 7 are sequentially andcontinuously raised, and after the wet tissue 7 is divided from the nextwet tissue 7, the next wet tissue 7 is in the state in which its endpops up from an extraction hole 26 to be described later (hereinafter,this state is referred to as “pop-up”). The configuration may also havea W-shape or the other shapes other than the above-described Z-shape andthe WZ-shape.

As illustrated in FIG. 4A, the wet tissue continuing material body 6having a Z-shaped folded structure is formed by a plurality of layeredwet tissues which are respectively folded in a Z-shape. In addition, thewet tissue continuing material body 6 having the Z-shaped foldedstructure is piled so that an upper surface 7 c of a termination end ofa wet tissue 7 a overlaps a lower surface 7 d of a start end of the nextwet tissue 7 b. When the wet tissue 7 a is drawn out, the terminationend of the wet tissue 7 a acts to raise the start end of the next wettissue 7 b. Then, when the start end of the next wet tissue 7 b is drawnout from the extraction hole 26 to be described later to the upperportion of the extraction hole 26, the termination end of the wet tissue7 a and the start end of the next wet tissue 7 b are divided from eachother. That is, a portion where the termination end of the wet tissue 7a and the start end of the next wet tissue 7 b overlap forms theseparating portion (i.e., the dividing portion), and the wet tissue 7 ais separated from the wet tissue continuing material body 6 having thenext wet tissue 7 b at the dividing portion.

As illustrated in FIG. 4B, the wet tissue continuing material body 6having a WZ-shaped folded structure is formed by alternately piling awet tissue 7 e folded in a Z-shape and a wet tissue 7 f folded in aW-shape. In the case of FIG. 4B, the wet tissue continuing material body6 is piled so that an upper surface 7 g of a termination end of a wettissue 7 e folded in a Z-shape overlaps a lower surface 7 h of a startend of the next wet tissue 7 f folded in a W-shape. When the wet tissue7 e folded in a Z-shape is drawn out, the termination end of the wettissue 7 e acts to raise the start end of the next wet tissue 7 f foldedin a W-shape. Then, when the start end of the wet tissue 7 f folded in aW-shape is drawn out from the extraction hole 26 to be described laterto the upper portion of the extraction hole 26, the termination end ofthe wet tissue 7 e folded in a Z-shape and the start end of the wettissue 7 f folded in a W-shape are divided from each other. Furthermore,the wet tissue is raised by the same operation even when the start endof a wet tissue 7 i folded in a Z-shape is drawn out after the wettissue 7 f folded in a W-shape is drawn out. That is, a portion wherethe termination end of the wet tissue 7 e overlaps the start end of thenext wet tissue 7 f and a portion where the termination end of the wettissue 7 f overlaps the start end of the next wet tissue 7 i form theseparating portions (i.e., the dividing portions), and the wet tissues 7e and 7 f are separated from the wet tissue continuing material body 6having the next wet tissues 7 f and 7 i at the dividing portions.

Furthermore, the configuration of the wet tissue continuing materialbody 6 is not limited to the above-described configuration. Theconfiguration of the wet tissue continuing material body 6 may be formedin any shape as long as the wet tissue continuing material body may beaccommodated in the bag body 3. For example, in this embodiment, theposition of the separating portion 10 is located at the center portionbetween the first turnback portion 8 and the second turnback portion 9.However, the separating portion 10 may be disposed at a position otherthan the center portion. Further, the separating portion 10 may bedisposed at a position where the first turnback portion 8 or the secondturnback portion 9 is formed. Further, in this embodiment, as for thevertical relation of the wet tissue continuing material body 6, aportion with the separating portion 10 and a portion without theseparating portion 10 are alternated. However, the portions with theseparating portion 10 may overlap each other in the up-down direction.Further, the separating portion 10 may be located at both positionswhere the first turnback portion 8 and the second turnback portion 9 areformed. Furthermore, the separating portion may have a configurationother than the above-described configuration.

Next, the configuration of the bag body 3 will be described. The bagbody 3 is an accommodation container that accommodates the wet tissuecontinuing material body 6 therein. The bag body 3 is formed in, forexample, a pillow-like bag shape by a plastic film having air-tightnessand flexibility or the like. As illustrated in FIG. 1, the bag body 3 isformed so that both ends in the forward-rearward direction areair-tightly sealed by heat-seal or the like.

As illustrated in FIG. 2, the bag body 3 is formed in a double-layerstructure with an inner layer 13 and an outer layer 14. In the innerlayer 13, for example, a film formed of plastic such as polyethylene,polypropylene, polyester, polyamide, vinyl chloride, vinylidenechloride, and cellophane, a laminate film formed of two or more of thesematerials, or a complex film formed by laminating an aluminum foil onthese single or complex laminate films may be used. In the outer layer14, for example, a polyethylene terephthalate (PET) film may be used.Furthermore, in this embodiment, the bag body 3 formed by two layers,that is, the inner layer 13 and the outer layer 14 is used, but thestructure of the bag body 3 is not limited thereto. For example, the bagbody 3 may be formed as a multi-layer structure having three or morelayers or a single-layer structure. Further, the materials of the innerlayer 13 and the outer layer 14 are not limited to the above-describedmaterials.

As illustrated in FIGS. 1 and 2, the bag body 3 is provided with anopening 2. Through the opening 2, the wet tissue 7 separated from thewet tissue continuing material body 6 that is accommodated in the bagbody 3 as the accommodation container is drawable to the outside. Inthis embodiment, the opening 2 is formed as a square opening in theupper portion of the bag body 3, but the shape of the opening 2 is notlimited thereto. Further, the opening 2 may be formed to allow the wettissue 7 to be drawable therethrough to the outside, and the size of theopening 2 may be arbitrarily adjusted.

As illustrated in FIG. 2, the extraction hole forming member 4 isattached to the inside of the bag body 3. The extraction hole formingmember 4 is disposed at such a position that the positions of a pinchinghole 22 to be described later and the extraction hole 26 coincide withthe position of the opening 2 of the bag body 3 so as to alignthemselves. As a method of attaching the extraction hole forming member4 to the bag body 3, for example, a method using hot-melt or the likemay be exemplified, but the present invention is not limited thereto,and various methods may be arbitrarily selected. Further, in the presentspecification, the description is provided by using the example in whichthe extraction hole forming member is disposed at the position so thatthe positions of the pinching hole and the extraction hole coincide withthe position of the opening of the bag body so as to align themselves.The positions of the pinching hole, the extraction hole, and the openingmay not coincide with each other.

As illustrated in FIG. 5A, the extraction hole forming member 4 and thelid 5 according to this embodiment may be integrally molded with eachother through a hinge portion 5 a.

For example, the extraction hole forming member 4 is formed of athermoplastic resin material such as polyethylene and polypropylene. Inthis embodiment, the description is provided by using the extractionhole forming member 4 which is integrally molded by an injection moldingmethod or the like, but the extraction hole forming member 4 may also beformed by the combination of the separately molded members. Further, theextraction hole forming member 4 may be formed by a method other thanthe above-described method.

As illustrated in FIGS. 5A, 5B, and 6A, the extraction hole formingmember 4 includes a base plate 21 as a base portion for attaching theextraction hole forming member 4 to the bag body 3, an accommodationspace 23 which accommodates a front end 6 a, or a leading end 6 a, ofthe wet tissue continuing material body 6 through the pinching hole 22through which the wet tissue 7 is drawn out from the bag body 3, and anextraction hole forming portion 27 having the extraction hole 26 whichis opened to separate the wet tissue 7 at the separating portion 10 ofthe wet tissue continuing material body 6.

Further, the extraction hole forming member 4 provided in this exampleincludes a partitioning portion 24 and a fragile portion 25. Thepartitioning portion 24 is provided or arranged to close the pinchinghole 22 and partitions the accommodation space 23 into a plurality ofsections. The fragile portion 25 is formed at the peripheral edgeportion of the partitioning portion 24 and is broken when apredetermined shear force is applied thereto.

The base plate 21 is formed in a flat square plate shape, and is formedso that the upper surface thereof becomes an attachment surface when thebase plate 21 is attached to the inner surface of the bag body 3. Thereference numeral 28 of FIG. 5A indicates the attachment surface. In thestate where the extraction hole forming member 4 is attached to the bagbody 3, the attachment surface 28 provided in the base plate 21 facesthe inner surface of the bag body 3. Further, the base plate 21 isintegrally molded with the lid 5 through the hinge portion 5 a. The baseplate 21 is provided with an extraction concave portion 29 at thesubstantially center portion thereof. The extraction concave portion 29is formed in a concave shape so that the position thereof in the heightdirection is lower than the position of the base plate 21 at one steplower. Further, the extraction concave portion 29 is formed in acircular shape in the top view of the extraction hole forming member 4.

A vertical wall portion 30 is uprightly formed in the extraction concaveportion 29. The vertical wall portion 30 is formed in a circular shapein the top view of the extraction hole forming member 4. Further, thevertical wall portion 30 is formed so that the outer diameter of thevertical wall portion 30 is smaller than the inner diameter of theextraction concave portion 29. Furthermore, the vertical wall portion 30is formed at a position where the center position of an inner wall 29 aof the extraction concave portion 29 coincides with the center positionof the vertical wall portion 30. That is, the vertical wall portion 30is formed so that a circle drawn by the inner wall 29 a of theextraction concave portion 29 is concentric with a circle drawn by thevertical wall portion 30. Further, as illustrated in FIGS. 7A and 7B,the vertical wall portion 30 is formed so that the position of the uppersurface thereof in the height direction is lower than the position ofthe upper surface of the base plate 21 in the height direction and whenthe lid 5 is closed, the upper surface of the lid 5 and the uppersurface of the base plate 21 are substantially flush with each other. Inthe present specification, the description is provided by using theexample in which the center position of the vertical wall portion 30coincides with the center position of the inner wall 29 a, but thepositions thereof may not coincide with each other.

As illustrated in FIG. 6A, the pinching hole 22 allows a user to pinchthe front end 6 a of the wet tissue continuing material body 6 formingthe wet tissues 7 when the user extracts the wet tissue 7 so that thewet tissue 7 is drawn out from the bag body 3. The pinching hole 22 isopened to the inner peripheral side of the vertical wall portion 30. Thepinching hole 22 is formed in a size in which the user may pinch thefront end 6 a of the wet tissue continuing material body 6 accommodatedin the bag body 3 with a finger to extract the front end 6 a. In thisembodiment, the hole diameter of the pinching hole 22 is substantiallythe same as the inner diameter of the vertical wall portion 30. Further,the hole diameter of the pinching hole 22 may be determined so that theuser may pinch the front end 6 a of the wet tissue continuing materialbody 6 with a finger to extract the front end 6 a, and is not limited tothe size and shape of this embodiment. That is, sizes and shapes may bearbitrarily selected. For example, when the pinching hole 22 is formedto be large, the user easily inserts a finger into the pinching hole 22,and hence the front end 6 a of the wet tissue continuing material body 6is easily drawn out during the drawing, thereby enhancing handleability.In contrast, when the pinching hole 22 is formed to be small, theextraction hole forming member 4 may be decreased in size, and themanufacturing cost of the extraction hole forming member 4 may belargely reduced. The shape of the pinching hole in the top view of thepinching hole may be a shape other than a circular shape.

As illustrated in FIG. 5B, in a case where the wet tissue packaging unit1 is the unused item, the pinching hole 22 is closed by the partitioningportion 24 to be described later and is opened by removing thepartitioning portion 24 as illustrated in FIG. 6A.

The accommodation space 23 accommodates the front end 6 a of the wettissue continuing material body 6 through the pinching hole 22 and is aspace indicated by the dotted line in FIG. 7B. The accommodation space23 is sealed together with the internal space of the bag body 3, with agap, when the lid 5 is closed. Regarding the wet tissue packaging unit1, in the case where the wet tissue packaging unit 1 is the unused item,the pinching hole 22 is closed by the partitioning portion 24.Therefore, the accommodation space 23 is partitioned into a space thatcommunicates with the inside of the bag body 3 and a space thatcommunicates with the outside of the bag body 3 by the partitioningportion 24. Further, when the partitioning portion 24 is removed and thepinching hole 22 is opened, the accommodation space 23 is formed as aspace indicated by the dotted line in FIG. 7B.

The partitioning portion 24 partitions the bag body 3 into the insideand the outside by closing the pinching hole 22. Further, thepartitioning portion 24 also separates the accommodation space 23 intothe space that communicates with the inside of the bag body 3 and thespace that communicates with the outside of the bag body 3. Asillustrated in FIGS. 5B and 7A, the partitioning portion 24 is formed onthe inner peripheral side of the vertical wall portion 30. Further, atab 31 is integrally formed with the upper portion of the partitioningportion 24. The tab 31 is formed in an annular shape and is formed sothat a part of the inner portion thereof is connected to thepartitioning portion 24.

The fragile portion 25 is provided in the peripheral edge portion of thepartitioning portion 24. As illustrated in FIG. 7A, the fragile portion25 is formed at the peripheral edge portion of the partitioning portion24 in a groove shape that is thinner than a thickness of thepartitioning portion 24, and is formed to be broken by a stress thatoccurs due to a predetermined shear force when the shear force isapplied. Here, the “predetermined shear force” is a force having aconventionally well-known magnitude needed for the shear failure of thefragile portion 25 provided at the peripheral edge portion of thepartitioning portion 24.

The extraction hole forming portion 27 separates the wet tissue 7 at theseparating portion 10 provided in the wet tissue continuing materialbody 6 and allows the front end 6 a of the wet tissue continuingmaterial body 6 to pop up. As illustrated in FIGS. 2 and 6B, theextraction hole forming portion 27 is formed in a plate shape that isconvexly curved toward the inner side of the bag body 3 and has a pairof leg portions 32 a and 32 b at both ends of the curved end. Further,the pair of leg portions 32 a and 32 b is integrally formed with thebase plate 21 on the lower side of the base plate 21 and is henceintegrally formed with the base plate 21. The extraction hole formingportion 27 is disposed on the lower side of the base plate 21 so thatthe extraction hole 26 is located below a point where the extractionconcave portion 29 of the base plate 21 is formed. Furthermore, theextraction hole forming portion 27 is formed in a curved shape.

As illustrated in FIG. 6B, in the extraction hole forming portion 27,the extraction hole 26 is opened to the substantially center portion ofthe extraction hole forming portion 27 in the forward-rearwarddirection. The extraction hole 26 is formed in an elongated hole shapethat extends in the right-left direction. The extraction hole 26 isformed in a size in which, when the front end 6 a of the wet tissuecontinuing material body 6 or the like passes therethrough, a frictionresistance can be applied to the wet tissue continuing material body 6that passes therethrough. Further, in the extraction hole formingportion 27, a first slit 33 and a second slit 34 are respectivelyprovided in both ends of the extraction hole 26 in the forward-rearwarddirection with respect to the extraction hole 26. The first and secondslits 33 and 34 are formed in elongated hole shapes that extend in theright-left direction, and the widths thereof in the forward-rearwarddirection are smaller than the width of the extraction hole 26 in theforward-rearward direction. Furthermore, the first and second slits 33and 34 are formed so that the widths of the first and second slits 33and 34 are the same. The first and second slits 33 and 34 are alsoformed so that, when the front end 6 a of the wet tissue continuingmaterial body 6 passes therethrough, a resistance can be applied to thefront end 6 a of the wet tissue continuing material body 6 that passestherethrough.

Furthermore, in the extraction hole forming portion 27, a firstprotruding piece 35 is provided between the extraction hole 26 and thefirst slit 33, and a second protruding piece 36 is provided between thefirst slit 33 and the second slit 34. The first protruding piece 35includes a left protruding piece 35 a that extends from the left to theright and a right protruding piece 35 b that extends from the right tothe left, and a first void 37 is provided between the left protrudingpiece 35 a and the right protruding piece 35 b. Further, the secondprotruding piece 36 includes a left protruding piece 36 a that extendsfrom the left to the right and a right protruding piece 36 b thatextends from the right to the left, and a second void 38 is providedbetween the left protruding piece 36 a and the right protruding piece 36b. The first and second voids 37 and 38 are formed to be located on thesubstantially same straight line in the right-left direction.

As illustrated in FIGS. 2 and 6A, the extraction hole forming member 4is provided with a relief portion 39 (i.e., communicating portion orlinking part). The relief portion 39 allows a portion of the front end 6a which is not accommodated in the accommodation space 23 to be pushedinto the bag body 3 so as to be relieved when the front end 6 a of thewet tissue continuing material body 6 is pushed into the accommodationspace 23. The relief portion 39 is formed to be surrounded by the baseplate 21, the extraction hole forming portion 27 that is convexlycurved, and the leg portions 32 a and 32 b and is formed as acommunicating portion that allows the accommodation space 23 and theinternal space of the bag body 3 to communicate with each other in anarea excluding the extraction hole 26 and the like. The relief portion39 is formed in a convexly curved shape by both sides of a portion of aplate-like attachment hole forming portion that is swollen or expandedin a convex shape. Further, in this embodiment, each of the reliefportions 39 is formed in the leftward direction and in the rightwarddirection, but the points where the relief portions 39 are formed maybe, for example, points in the forward direction and in the rearwarddirection, or the other positions. Furthermore, the size of the reliefportion 39 may be arbitrarily selected to be used as long as the frontend 6 a of the wet tissue continuing material body 6 may move betweenthe accommodation space 23 and the internal space of the bag body 3. Thenumber of relief portions 39 may also be arbitrarily selected.

Furthermore, the extraction hole forming portion 27 of this embodimentis integrally formed with the pair of leg portions 32 a and 32 b and thebase plate 21, but may also be formed separately from the base plate orhave the other structures.

The lid 5 is provided on the extraction hole forming member 4 in anopenable and closable manner and is configured to close or open theaccommodation space 23 provided in the extraction hole forming member 4.Further, the extraction hole forming member 4 and the lid 5 may bemolded separately from each other, and may also be molded integrallywith each other by a structure other than hinges in a case where theyare formed integrally with each other. The lid 5 is formed of the samematerial as that of the extraction hole forming member 4, for example, athermoplastic resin material such as polyethylene and polypropylene.

As illustrated in FIG. 6A, the lid 5 is formed integrally with theextraction hole forming member 4 through the hinge portion 5 a. Theshape of the lid 5 is formed as a circular shape in the top view of thelid 5. Further, a side wall 41 is provided in the peripheral edgeportion of the lid 5. The side wall 41 is formed along the peripheraledge portion in the plan view of the lid 5. In this embodiment, the sidewall 41 is formed in a circular shape. The side wall 41 is formed sothat the center position thereof when the lid 5 is closed is at the sameposition as those of the pinching hole 22 and the extraction hole 26.Furthermore, the side wall 41 is formed so that the inner diameterthereof is substantially the same as the outer diameter of the verticalwall portion 30 or greater than the outer diameter of the vertical wallportion 30 so that the inside of the bag body 3 may be sealed by fittingthe outer peripheral surface of the vertical wall portion 30 with theinner peripheral surface of the side wall 41 when the lid 5 is closed.

Next, in the wet tissue packaging unit 1 according to this embodiment, aprocedure of removing the partitioning portion 24 will be described. Ina case where the wet tissue packaging unit 1 according to thisembodiment is an unused item that the user does not use yet, asillustrated in FIG. 8A, the partitioning portion 24 of the extractionhole forming member 4 is present. In this case, the pinching hole 22 isclosed by the partitioning portion 24, and the accommodation space 23 isalso partitioned by the partitioning portion 24. Further, the lid 5 isgenerally closed, but a state where the lid 5 is opened is illustratedin FIG. 8A.

When the user initially uses the wet tissue packaging unit 1, first, thepartitioning portion 24 is removed. In the case of removing thepartitioning portion 24, the user pinches the tab 31 with a finger andapplies a force in the A direction in FIG. 8B. In this case, since thetab 31 is disposed above the partitioning portion 24, when the userapplies the force in the A direction, a force in the B direction isapplied to the partitioning portion 24. The force in the B direction isapplied to the fragile portion 25 as shear force.

When the shear force in the B direction is applied to the fragileportion 25 by the force in the A direction applied by the user, sincethe fragile portion 25 is formed to be thinner than the partitioningportion 24, a stress applied to the fragile portion 25 becomes greaterthan a stress applied to positions other than the fragile portion 25.Therefore, the fragile portion 25 is likely to undergo shear failure,and undergoes shear failure when a predetermined stress is appliedthereto such that the partitioning portion 24 is removed from theextraction hole forming member 4. The fragile portion 25 graduallyundergoes shear failure from the position to which the predeterminedshear force is applied and the entire fragile portion 25 finallyundergoes shear failure. When the shear failure of the entire fragileportion 25 occurs, as illustrated in FIG. 8C, the partitioning portion24 is removed such that the pinching hole 22 is opened.

As illustrated in FIG. 8C, when the partitioning portion 24 is removedas described above, the pinching hole 22 is opened and the accommodationspace 23 which has been partitioned by the partitioning portion 24 isformed as a space. When the partitioning portion 24 is removed asdescribed above, the front end 6 a of the wet tissue continuing materialbody 6 that is accommodated in the bag body 3 may be extracted.

Next, a procedure of drawing out the wet tissue continuing material body6 by the user will be described. When the pinching hole 22 is opened inthe above-described procedure, the extraction hole forming portion 27and the extraction hole 26 of the extraction hole forming memberdisposed inside the bag body 3 are visible through the pinching hole 22from the outside of the bag body 3. This is because the extraction holeforming member 4 is attached at the position which coincides with theposition of the pinching hole 22 in the forward-rearward and right-leftdirections and the position of the opening 2 of the bag body 3 in theforward-rearward and right-left directions.

As illustrated in FIG. 9A, in the wet tissue packaging unit 1, there maybe cases where the front end 6 a of the wet tissue continuing materialbody 6 is not drawn above the extraction hole 26 of the extraction holeforming portion 27. For example, there is a case where the wet tissuepackaging unit 1 is an unused item, and a case where the front end 6 aof the wet tissue continuing material body 6 inside the bag body 3 doesnot pop up but falls below the extraction hole forming portion 27.

In these cases, the user draws out the front end 6 a of the wet tissuecontinuing material body 6. When the front end 6 a is drawn, the userputs a finger into the pinching hole 22 which is opened in the precedentprocedure and pushed down the extraction hole forming portion 27 or thelike to move the extraction hole forming member 4 (including the upperportion of the bag body 3) in the C direction in FIG. 9A so as to allowthe lowest portion of the lower end surface of the extraction holeforming portion 27 to approach the upper surface of the wet tissuecontinuing material body 6. Further, in FIG. 9A, regarding theextraction hole forming member indicated by the two-dotted chain line,as an example in which the lowest portion is caused to approach theupper surface of the wet tissue continuing material body 6, a statewhere the lowest portion of the lower end surface of the extraction holeforming portion 27 is brought into contact with the upper surface of thewet tissue continuing material body 6 is illustrated.

Next, as illustrated in FIG. 9B, the user pinches the front end 6 a ofthe wet tissue continuing material body 6 with the fingertip to raise itthrough the extraction hole 26. At this time, it is desirable that theend portion of the front end 6 a of the wet tissue continuing materialbody 6 be located to extend in the forward-rearward direction and belocated at substantially the center portions of the pinching hole 22 andthe extraction hole 26 in the right-left direction. The wet tissuecontinuing material body 6 raised through the extraction hole 26 isdrawn out while widening in the forward-rearward and right-leftdirections as illustrated in FIG. 10. Therefore, a portion of the wettissue continuing material body 6 which widens in the forward-rearwarddirection passes through the first and second voids 37 and 38 and thefirst and second slits 33 and 34 other than the extraction hole 26, andis drawn above the extraction hole forming member 4. Further, in thefollowing description, the extraction hole 26, the first void 37, thesecond void 38, the first slit 33, and the second slit 34 may bereferred to as “the extraction hole 26 and the like”. Furthermore, inthe concept of the present invention, “the extraction hole 26 and thelike” are referred to as “the extraction hole”.

At this time, the wet tissue continuing material body 6 is drawn outwhile applying a force in the D direction (FIG. 11A) to the first andsecond protruding pieces 35 and 36 by a resistance that occurs betweenthe first and second protruding pieces 35 and 36. Therefore, while thewet tissue continuing material body 6 is drawn out, the force in the Ddirection is applied to the first and second protruding pieces 35 and 36such that the first and second protruding pieces 35 and 36 areelastically deformed by the force in the D direction.

As illustrated in FIG. 11B, when the separating portion 10 in the wettissue continuing material body 6 passes through the extraction hole 26and the like, a force in the E direction in FIG. 11B is applied to thefront end 6 a of the wet tissue continuing material body 6 (the wettissue 7) on the side lower than the separating portion 10 by theresistance applied when passing through the extraction hole 26 and thelike and the restoring forces of the first and second protruding pieces35 and 36. On the other hand, a force in the F direction in FIG. 11Bwhich is applied as the user raises the wet tissue 7 is applied to thewet tissue 7 on the side upper than the separating portion 10.Therefore, the force in the E direction and the force in the F directionare applied to the separating portion 10 such that the wet tissue 7 onthe side upper than the separating portion 10 is separated from the wettissue 7 on the side lower than the separating portion 10 and the wettissue 7 on the side upper than the separating portion 10 is extractedto the outside of the bag body 3 as a single sheet-like wet tissue 7.Further, the wet tissue 7 on the side lower than the separating portion10 becomes a wet tissue 7 forming the front end 6 a of the wet tissuecontinuing material body 6 after being separated.

The wet tissue 7 forming the front end 6 a of the wet tissue continuingmaterial body 6 after the separation does not receive the force in the Fdirection which has been applied by the user in FIG. 11B and thus, triesto move in the G direction in FIG. 11C. At this time, a resistance isapplied to the front end 6 a when passing through the extraction hole 26and the like. The resistance at this time is applied in the oppositedirection to the G direction in which the wet tissue 7 forming the frontend 6 a tries to move, and the magnitude of the resistance balances withthe magnitude of the force applied when the wet tissue 7 tries to movein the G direction such that the front end 6 a of the wet tissue 7becomes a pop-up state in which the front end 6 a is kept in a state ofbeing positioned above the extraction hole forming portion 27. Further,in a case where the front end 6 a of the wet tissue continuing materialbody 6 is not entirely accommodated in the accommodation space 23 atthis time, a portion of the front end 6 a moves to the internal space ofthe bag body 3 through the relief portion 39.

After extracting the wet tissue 7, the user closes the lid 5 to seal thebag body 3. When the wet tissue 7 is to be extracted thereafter, theuser may open the lid 5 again, insert a finger into the pinching hole22, pinch the front end 6 a of the wet tissue continuing material body 6which has already popped up and draw out the wet tissue continuingmaterial body 6. Then, the wet tissue 7 is separated at the separatingportion 10 by the same operation as described above such that thesheet-like wet tissue 7 is drawn out.

When the wet tissue 7 is extracted again, even in a case where the frontend 6 a of the wet tissue continuing material body 6 has not popped up,the wet tissue 7 may be drawn out in the same order described above.

In the wet tissue packaging unit 1 according to this embodiment, as thewet tissues 7 are drawn out, the volume of the wet tissue continuingmaterial body 6 decreases. However, in the wet tissue packaging unit 1according to this embodiment, the lid 5 is formed in an openable andclosable manner with respect to the extraction hole forming member 4.Therefore, even when the volume of the wet tissue continuing materialbody 6 accommodated in the bag body 3 decreases, the lid 5 may be closedto seal the bag body 3. Therefore, according to the wet tissue packagingunit 1 according to this embodiment, the bag body 3 is prevented fromnot being maintained in the sealed state and thus the chemical solutionand the like impregnated into the wet tissue continuing material body 6(the wet tissue 7) are prevented from volatilizing. Accordingly, it ispossible to provide the wet tissue 7 in a state where the chemicalsolution and the like are always impregnated therein for the user.

Further, according to the wet tissue packaging unit 1 according to thisembodiment, in the case where the wet tissue packaging unit 1 is theunused item, the pinching hole 22 is closed by the partitioning portion24. To use the wet tissue packaging unit 1, the fragile portion 25provided in the peripheral edge portion of the partitioning portion 24is broken to remove the partitioning portion 24 and open the pinchinghole 22, and thereafter the front end 6 a of the wet tissue continuingmaterial body 6 is pinched. Accordingly, it is possible to very easilydetermine whether or not the wet tissue packaging unit 1 is the unuseditem according to the presence or absence of the partitioning portion24. Therefore, when using the wet tissue packaging unit 1 or purchasingthe wet tissue packaging unit 1, it is possible for the user to use orpurchase the wet tissue packaging unit 1 after determining whether ornot the wet tissue packaging unit 1 is the unused item.

Furthermore, according to the wet tissue packaging unit 1 according tothis embodiment, since the extraction hole forming member 4 providedwith the lid 5 is attached to the inner surface of the bag body 3,during the manufacture, it is possible to manufacture the wet tissuepackaging unit 1 without a process of attaching the lid 5 afterattaching the extraction hole forming member 4 to the bag body 3.Therefore, according to the wet tissue packaging unit 1 according tothis embodiment, the number of processes may be reduced during themanufacture and hence it is possible to largely reduce the manufacturingcost. Furthermore, the wet tissue packaging unit 1 according to thisembodiment includes the relief portion which allows the accommodationspace 23 and the internal space of the bag body 3 to communicate witheach other. Accordingly, when the front end 6 a of the wet tissuecontinuing material body 6 is to be accommodated in the accommodationspace 23, in a case where the front end 6 a is not entirely accommodatedonly in the accommodation space 23, a portion of the front end 6 a maybe relieved to the inside of the bag body 3 through the relief portion.Therefore, according to the wet tissue packaging unit 1 according tothis embodiment, the bag body 3 may be always sealed by closing the lid5 regardless of the pop-up amount of the front end 6 a of the wet tissuecontinuing material body 6, and hence it is possible to prevent thechemical solution and the like impregnated into the wet tissuecontinuing material body 6 (the wet tissue 7) from volatilizing.

Next, a second embodiment of the wet tissue packaging unit according tothe present invention will be described with reference to FIGS. 12A and12B. Further, the description of the same components as those of thefirst embodiment will not be repeated and the same reference numeralsare used in the description of the second embodiment.

The wet tissue packaging unit according to this embodiment is differentfrom that of the first embodiment described above in the structure ofthe extraction hole forming member, and hence the structure of theextraction hole forming member will now be described.

An extraction hole forming member 51 according to this embodiment isattached at a position where the positions of an extraction hole 54 andthe opening 2 of the bag body 3 coincide with each other on the innerside of the bag body 3. As a method of attaching the extraction holeforming member 51 to the bag body 3, for example, a method usinghot-melt or the like may be exemplified, but the present invention isnot limited thereto. That is, various methods may be arbitrarilyselected.

For example, the extraction hole forming member 51 may be formed of athermoplastic resin material such as polyethylene and polypropylene. Inthis embodiment, the description is provided by using the extractionhole forming member 51 which is integrally molded by an injectionmolding method or the like, but the extraction hole forming member 51may also be formed by the combination of the separately molded members.Further, the extraction hole forming member 51 may be formed by a methodother than the above-described method.

As illustrated in FIG. 12A, the extraction hole forming member 51includes a base plate 52 as a base portion for attaching the extractionhole forming member 51 to the bag body 3, an accommodation space 53which can accommodate the front end of the wet tissue continuingmaterial body, and an extraction hole 54 through which the wet tissuecontinuing material body is separated at the separating portion of thewet tissue continuing material body. Further, the extraction holeforming member 51 illustrated in this example includes a closing portion55 which is provided to close the extraction hole 54 and a fragileportion 56 which is formed at the peripheral edge portion of the closingportion 55 and is broken when a predetermined shear force is appliedthereto.

The base plate 52 is formed in a flat square plate shape, and is formedso that the upper surface thereof becomes an attachment surface when thebase plate 52 is attached to the inner surface of the bag body. Thereference numeral 57 of FIG. 12A indicates the attachment surface. Inthe state where the extraction hole forming member 51 is attached to thebag body, the attachment surface 57 provided in the base plate 52 facesthe inner surface of the bag body. Further, the upper surface of thebase plate 52 is integrally molded with the lid 5 through the hingeportion 5 a. The base plate 52 is provided with an extraction concaveportion 58 at the substantially center portion thereof. The extractionconcave portion 58 is formed in a concave shape so that the positionthereof in the height direction is lower than the position of the baseplate 52 at one step lower. Further, the extraction concave portion 58is formed in a circular shape in the top view of the extraction holeforming member 51.

A vertical wall portion 59 is uprightly formed in the extraction concaveportion 58. The vertical wall portion 59 is formed in a circular shapein the top view of the extraction hole forming member 51. Further, thevertical wall portion 59 is formed so that the outer diameter of thevertical wall portion 59 is smaller than the inner diameter of theextraction concave portion 58. Furthermore, the vertical wall portion 59is formed at a position where the center position of an inner wall ofthe extraction concave portion 58 coincides with the center position ofthe vertical wall portion 59. That is, the vertical wall portion 59 isformed so that a circle drawn by the inner wall of the extractionconcave portion 58 is concentric with a circle drawn by the verticalwall portion 59. Further, the vertical wall portion 59 is formed so thatthe position of the upper surface thereof in the height direction islower than the position of the upper surface of the base plate 52 in theheight direction and when the lid 5 is closed, the upper surface of thelid 5 and the upper surface of the base plate 52 substantially are flushwith each other.

The accommodation space 53 is a space formed to accommodate the frontend 6 a of the wet tissue continuing material body 6. The accommodationspace 53 is sealed when the lid 5 is closed. The accommodation space 53is surrounded by the lid 5, the closing portion 55, and the verticalwall portion 59 when the wet tissue packaging unit 1 is the unused itemand the lid 5 is closed. Further, when the lid 5 is closed in a case ofa used item in which the closing portion 55 is formerly removed, theaccommodation space 53 is formed to be surrounded by the lid 5 and thevertical wall portion 59 and to communicate with the internal space ofthe bag body 3 through the extraction hole 54.

The extraction hole 54 is formed such that the wet tissue 7 separates atthe separating portion 10 provided in the wet tissue continuing materialbody 6 and the following front end 6 a of the wet tissue continuingmaterial body 6 is allowed to pop up. As illustrated in FIG. 12B, theextraction hole 54 is opened to the base plate 52. The extraction hole54 is formed so that the user pinches the front end 6 a of the wettissue continuing material body 6 to draw out the front end 6 a and thefront end 6 a of the wet tissue continuing material body 6 is maintainedin the pop-up state.

As illustrated in FIG. 12B, the extraction hole 54 is formed inside anarea surrounded by the vertical wall portion 59 and is opened bybreaking the fragile portion 56 and removing the closing portion 55. Theextraction hole 54 is formed to allow the accommodation space 53 tocommunicate with the internal space of the bag body 3 so that the frontend 6 a of the wet tissue continuing material body 6 accommodated in thebag body 3 is pinched, the pinched front end 6 a is drawn to the outsideof the bag body 3, and furthermore the front end 6 a is maintained inthe pop-up state. As illustrated in FIG. 12B, the extraction hole 54includes a pinching hole 61 which is opened at substantially the centerportion thereof, is formed to be wide in the forward-rearward direction,and has an elongated hole shape that widens in the right-left direction,a first extraction slit 62 which extends to the left while drawing anarc line from the pinching hole 61, and a second extraction slit 63which extends to the right while drawing an arc line from the pinchinghole 61. The first and second extraction slits 62 and 63 are opened toextend from the pinching hole 61 to the left while drawing a curve withrespect to the pinching hole 61 and thereafter extend to the right whiledrawing a curve. In this embodiment, the shape of the extraction hole isthe above-described shape, but is not limited thereto and may be formedin the other shapes. Further, the shape of the extraction hole may notbe symmetrical in the right-left direction or may not be symmetrical inthe forward-rearward direction.

The closing portion 55 partitions the bag body 3 into the inside and theoutside by closing the extraction hole 54. The closing portion 55 isformed inside the vertical wall portion 59. Further, a tab 60 isintegrally formed with the upper portion of the closing portion 55. Thetab 60 is formed in an annular shape and is formed so that a part of theinner portion thereof is connected to the closing portion 55.

The fragile portion 56 is provided in the peripheral edge portion of theclosing portion 55. As illustrated in FIG. 12A, the fragile portion 56is formed at the peripheral edge portion of the closing portion 55 in agroove shape so that a thickness thereof is thinner than a thickness ofthe closing portion 55. Further the fragile portion 56 is formed to bebroken by a stress that occurs due to a predetermined shear force whenthe shear force is applied. Here, the “predetermined shear force” is aforce having a conventionally well-known magnitude needed for the shearfailure of the fragile portion 25 provided at the peripheral edgeportion of the partitioning portion 24.

Next, the operation/working-effect of the wet tissue packaging unitaccording to this embodiment when the front end 6 a of the wet tissuecontinuing material body 6 is extracted therefrom will be described.Further, in this embodiment, the procedure of removing the closingportion 55 and the procedure of extracting the wet tissue 7 by drawingout the front end 6 a of the wet tissue continuing material body 6 afterremoving the closing portion 55 are the same as those of the firstembodiment, and hence the description thereof will not be repeated.

As illustrated in FIG. 12B, in the extraction hole forming memberaccording to this embodiment, the extraction hole 54 includes thepinching hole 61 and the first and second extraction slits 62 and 63.When pinching the front end 6 a of the wet tissue continuing materialbody 6, as needed basis, the user causes the lowest portion of theextraction hole forming member 51 to approach the upper surface of thewet tissue continuing material body 6 and pinches the front end 6 athrough the pinching hole 61 to be drawn out from the bag body 3. Inthis case, since the wet tissue continuing material body 6 is located ata position where the user easily pinches the front end 6 a, the user mayeasily pinch the front end 6 a of the wet tissue continuing materialbody 6 to draw out the front end 6 a. Further, since the wet tissuecontinuing material body 6 (the wet tissue 7) which is being drawn outis drawn out while widening in the right-left direction, the wet tissuecontinuing material body 6 is drawn out while passing through the firstand second extraction slits 62 and 63 as well as the pinching hole 61.

Here, since the first and second extraction slits 62 and 63 are formedwhile drawing the curves as described above, a resistance is applied tothe wet tissue continuing material body 6 in the forward-rearward andright-left directions when the wet tissue continuing material body 6passes through the first and second extraction slits 62 and 63. Theresistance is applied in the opposite direction to the direction inwhich the user draws out the front end 6 a of the wet tissue continuingmaterial body 6. Therefore, when the separating portion 10 of the wettissue continuing material body 6 passes through the extraction hole 54,the wet tissue continuing material body 6 is separated at the separatingportion 10 and the sheet-like wet tissue 7 is extracted.

At this time, in the wet tissue continuing material body 6, the frontend 6 a pops up to the upper portion of the extraction hole 54 and thustries to move downward. However, even in this case, a resistance isapplied to the wet tissue continuing material body 6 by the pinchinghole 61 and the first and second extraction slits 62 and 63. Theresistance in this case is applied in the opposite direction to thedirection in which the front end 6 a of the wet tissue continuingmaterial body 6 tries to move downward, and the magnitude of the forcebalances with the force applied when the front end 6 a tries to move.Therefore, the front end 6 a of the wet tissue continuing material body6 does not move downward due to the extraction hole 54 and is maintainedin the state of popping up to the upper portion of the extraction hole54, that is, in the pop-up state. At this time, the front end 6 a isaccommodated in the accommodation space 53. When the user closes the lid5, the accommodation space 53 is sealed and hence the wet state of thewet tissue continuing material body 6 accommodated in the accommodationspace 53 and the bag body 3 is maintained.

As described above, according to the wet tissue packaging unit accordingto this embodiment, since the extraction hole 54 is provided in theextraction hole forming member 51 and the pinching hole 61 and the firstand second extraction slits 62 and 63 are provided in the extractionhole 51, it is possible to easily extract the wet tissue 7 withoutcomplicating the shape of the extraction hole forming member 51.Further, according to the wet tissue packaging unit according to thisembodiment, since the lid 5 is provided in the extraction hole formingmember 51, even when the volume of the wet tissue continuing materialbody 6 decreases, the bag body 3 may be sealed only by closing the lid5. Therefore, it is possible to maintain the wet tissue continuingmaterial body 6 accommodated in the bag body 3 in a wet state and thusit is possible to provide the wet tissue 7 in a state where the chemicalsolution and the like are always impregnated therein for the user.

Furthermore, according to the wet tissue packaging unit according tothis embodiment, in the case where the wet tissue packaging unit is theunused item, the extraction hole 54 is closed by the closing portion 55.To use the wet tissue packaging unit, the fragile portion 56 provided inthe peripheral edge portion of the closing portion 55 is broken toremove the closing portion 55 and to open the extraction hole 54, andthereafter the front end 6 a of the wet tissue continuing material body6 is pinched. Accordingly, it is possible to very easily determinewhether or not the wet tissue packaging unit is the unused itemaccording to the presence or absence of the extraction hole 54.Therefore, it is possible for the user to use the wet tissue packagingunit and to purchase the wet tissue packaging unit after determiningwhether or not the wet tissue packaging unit is the unused item.

Furthermore, according to the wet tissue packaging unit according tothis embodiment, since the extraction hole forming member 51 providedwith the lid 5 is attached to the inner surface of the bag body 3,during the manufacture, it is possible to manufacture the wet tissuepackaging unit without a process of attaching the lid 5 after attachingthe extraction hole forming member 51 to the bag body 3. Therefore,according to the wet tissue packaging unit according to this embodiment,the number of processes may be reduced during the manufacture and henceit is possible to largely reduce the manufacturing cost.

Next, a wet tissue packaging unit according to a third embodiment of thepresent invention will be described with reference to FIGS. 13A to 15C.Further, the description of the same components as those of the first orsecond embodiment will not be repeated and the same reference numeralsare used in the description of the third embodiment.

The wet tissue packaging unit according to this embodiment is differentfrom those of the first and second embodiments described above in thestructure of an extraction hole forming member 71, and hence thestructure of the extraction hole forming member 71 will now bedescribed.

The extraction hole forming member 71 according to this embodiment isattached at a position where the positions of an extraction hole 77 tobe described later and the opening 2 of the bag body 3 coincide witheach other on the inner side of the bag body 3. As a method of attachingthe extraction hole forming member 71 to the bag body 3, for example, amethod using hot-melt or the like may be exemplified, but the presentinvention is not limited thereto. That is, various methods may bearbitrarily selected.

As illustrated in FIG. 13A, the extraction hole forming member 71includes a base plate 72 as a base portion for attaching the extractionhole forming member 71 to the bag body 3, an accommodation space 74which accommodates the front end 6 a of the wet tissue continuingmaterial body 6 through a pinching hole 73 for extracting the wet tissue7 to the outside of the bag body 3, and an extraction hole formingportion 78 having an extraction hole 77 which is opened to separate thewet tissue 7 at the separating portion 10 of the wet tissue continuingmaterial body 6. Further, the extraction hole forming member 71illustrated in this example includes a partitioning portion which isprovided to close the pinching hole 73 and partitions the accommodationspace 74 into a plurality of sections, and a fragile portion which isformed at the peripheral edge portion of the partitioning portion and isbroken when a predetermined shear force is applied thereto. In addition,the configurations of the base plate 72, the pinching hole 73, theaccommodation space 74, the partitioning portion, and the fragileportion in this embodiment are the same as those of the first embodimentdescribed above, and hence the detailed description thereof will not berepeated.

As illustrated in FIGS. 13A to 14B, in the wet tissue packaging unitaccording to this embodiment, the extraction hole forming portion 78 issupported by the base plate 72 as the base portion in a cantileveredmanner. The extraction hole forming portion 78 separates the wet tissue7 at the separating portion 10 provided in the wet tissue continuingmaterial body 6 and allows the front end 6 a of the wet tissuecontinuing material body 6 to pop up. The extraction hole formingportion 78 has a leg portion 79 at the front end, and the leg portion 79is integrally formed with the base plate 72 on the lower side of thebase plate 72 and is hence integrally formed with the base plate 72.That is, the extraction hole forming portion 78 is supported by the baseplate 72 in a cantilevered manner through the leg portion 79. Theextraction hole forming portion 78 is disposed on the lower side of thebase plate 72 so that the extraction hole 77 is located below a pointwhere the extraction concave portion of the base plate 72 is formed.Furthermore, the extraction hole forming portion 78 is formed in acurved shape.

As illustrated in FIG. 14B, in the extraction hole forming portion 78,the extraction hole 77 is opened to the substantially center portion ofthe extraction hole forming portion 78 in the forward-rearwarddirection. The extraction hole 77 is formed in an elongated hole shapethat extends in the right-left direction. The extraction hole 77 isformed in a size in which, when the front end 6 a of the wet tissuecontinuing material body 6 or the like passes therethrough, a resistanceis applied to the front end 6 a of the wet tissue continuing materialbody 6 that passes therethrough. Further, in the extraction hole formingportion 78, a first slit 80 and a second slit 81 are respectivelyprovided in both ends of the extraction hole 77 in the forward-rearwarddirection with respect to the extraction hole 77. The first and secondslits 80 and 81 are formed in elongated hole shapes that extend in theright-left direction, and the widths thereof in the forward-rearwarddirection are smaller than that of the extraction hole 77 in theforward-rearward direction. Furthermore, the first and second slits 80and 81 are formed so that the widths of the first and second slits 80and 81 are the same. The first and second slits 80 and 81 are formed sothat, when the front end 6 a of the wet tissue continuing material body6 passes therethrough, a resistance is applied to the front end 6 a ofthe wet tissue continuing material body 6 that passes therethrough.

Furthermore, in the extraction hole forming portion 78, a firstprotruding piece 82 is provided between the extraction hole 77 and thefirst slit 80, and a second protruding piece 83 is provided between thefirst slit 80 and the second slit 81. The first protruding piece 82includes a left protruding piece 82 a that extends from the left to theright and a right protruding piece 82 b that extends from the right tothe left, and a first void 84 is provided between the left protrudingpiece 82 a and the right protruding piece 82 b. Further, the secondprotruding piece 83 includes a left protruding piece 83 a that extendsfrom the left to the right and a right protruding piece 83 b thatextends from the right to the left, and a second void 85 is providedbetween the left protruding piece 83 a and the right protruding piece 83b. The first and second voids 84 and 85 are formed to be located on thesubstantially straight line in the right-left direction.

As illustrated in FIGS. 13A to 14B, the extraction hole forming member71 is provided with a relief portion 86. The relief portion 86 allows aportion of the front end 6 a which is not accommodated in theaccommodation space 74 to be relieved into the bag body 3 when the frontend 6 a of the wet tissue continuing material body 6 is pushed into theaccommodation space 74. The relief portion 86 is formed to be surroundedby the base plate 72, the extraction hole forming portion 78, and theleg portion 79 to allow the accommodation space 74 and the internalspace of the bag body 3 to communicate with each other. In addition, inthis embodiment, the relief portion 86 is formed on the left, right, andrear sides of the extraction hole forming portion 78 where the legportion 79 is not formed, but the position where the relief portion 86is formed may be a position other than the above-described position.Furthermore, the size of the relief portion 86 may be arbitrarilyselected as long as the front end 6 a of the wet tissue continuingmaterial body 6 may move between the accommodation space 74 and theinternal space of the bag body 3. The number of relief portions may alsobe arbitrarily selected as long as the extraction hole forming portion78 is supported by the base plate 72 in a cantilevered manner.

Next, the operation of the wet tissue packaging unit according to thisembodiment will be described. As illustrated in FIG. 15A, the extractionhole forming member 71 according to this embodiment is formed so thatthe leg portion 79 provided on the front side of the extraction holeforming portion 78 is formed integrally with the lower side of the baseplate 72 and the rear side of the extraction hole forming portion 78becomes a free end. Here, in a case that the user pinches and raises thefront end 6 a of the wet tissue continuing material body 6 in the Hdirection illustrated in FIG. 15B, the extraction hole forming portion78 is elastically deformed in the I direction about or on the legportion 79 as the fulcrum at a side of the free end thereof by a force,which is applied in the H direction to the extraction hole 77 and thelike when the wet tissue continuing material body 6 is raised.

At this time, the relief portion 86 is narrowed. Subsequently, afterextracting the wet tissue 7, when the user pushes down the front end inthe J direction illustrated in FIG. 13C in order to cause the front end6 a of the wet tissue continuing material body 6 to be accommodated inthe accommodation space 74, the free end is elastically deformed in theK direction about the leg portion 79 as the fulcrum by a force, which isapplied to the extraction hole 77 and the like when the front end 6 a ismoved in the J direction. Hence the free end is turned toward theinternal space of the bag body 2. Accordingly, the relief portion 86 iswidened.

As described above, according to the wet tissue packaging unit accordingto this embodiment, in addition to the effects of the wet tissuepackaging unit 1 according to the first embodiment described above,since the extraction hole forming portion 78 is elastically deformedabout or on the leg portion 79 as the fulcrum, ease of extraction whenthe front end 6 a of the wet tissue continuing material body 6 isextracted is largely improved.

Further the extraction hole forming portion 78 is elastically deformedabout or on the leg portion 79 as the fulcrum and is turned when thefront end 6 a of the wet tissue continuing material body 6 isaccommodated in the accommodation space 74, thereby widening theaccommodation space 74. Therefore, according to the wet tissue packagingunit according to this embodiment, it is possible to largely improveease of extraction of the wet tissue and ease of accommodation. At thistime, it is possible to widen the relief portion 86 as well as theaccommodation space 74. Therefore, according to the wet tissue packagingunit according to this embodiment, it is possible to further improveease of accommodation of the wet tissue.

Next, a fourth embodiment of the wet tissue packaging unit according tothe present invention will be described with reference to FIGS. 16A to17C. Further, the description of the same components as those of thefirst to third embodiments will not be repeated and the same referencenumerals are used in the description of the fourth embodiment.

The wet tissue packaging unit according to this embodiment is differentfrom those of the first to third embodiments described above in thestructure of an extraction hole forming member 91, and hence thestructure of the extraction hole forming member 91 will now bedescribed.

The extraction hole forming member 91 according to this embodiment isdisposed or attached at a position where the positions of an extractionhole 111 and the opening 2 of the bag body 3 coincide with each other onthe inner side of the bag body 3. As a method of attaching theextraction hole forming member 91 to the bag body 3, for example, amethod using hot-melt or the like may be exemplified, but the presentinvention is not limited thereto. That is, various methods may bearbitrarily selected.

As illustrated in FIG. 16A, the extraction hole forming member 91includes a base plate 92 as a base portion for attaching the extractionhole forming member 91 to the bag body 3, an accommodation space 94which accommodates the front end 6 a of the wet tissue continuingmaterial body 6 through a pinching hole 93 for extracting the wet tissue7 to the outside of the bag body 3, and an extraction hole formingportion 96 having an extraction hole 111 which is opened to separate thewet tissue 7 at the separating portion 10 of the wet tissue continuingmaterial body 6. Further, the extraction hole forming member 91illustrated in this example includes a partitioning portion which isprovided to close the pinching hole 93 and partitions the accommodationspace 94 into a plurality of sections, and a fragile portion which isformed at the peripheral edge portion of the partitioning portion and isbroken when a predetermined shear force is applied thereto. In addition,the configurations of the base plate 92, the pinching hole 93, theaccommodation space 94, the partitioning portion, and the fragileportion in this embodiment are the same as those of the first embodimentdescribed above, and hence the detailed description thereof will not berepeated.

As illustrated in FIG. 16B, in the wet tissue packaging unit accordingto this embodiment, the extraction hole forming portion is divided intoa plurality of portions (in the case of this embodiment, the extractionhole forming portion 96 is formed by a first extraction hole formingportion 97 and a second extraction hole forming portion 98) and issupported by a base plate as the base portion in a cantilevered mannerso that the respective free ends of the extraction hole forming portionsoppose each other. In this embodiment, a state where the extraction holeforming portion 96 is formed by the two portions including the firstextraction hole forming portion 97 and the second extraction holeforming portion 98 is used for the description, but the extraction holeforming portion 96 may include two or more portions.

The extraction hole forming portion 96 separates the wet tissue 7 at theseparating portion 10 provided in the wet tissue continuing materialbody 6 and allows the front end 6 a of the wet tissue continuingmaterial body 6 to pop up. The first extraction hole forming portion 97has a leg portion 101 a at the front end, and the leg portion 101 a isintegrally formed with the base plate 92 on the lower side of the baseplate 92 and is hence integrally formed with the base plate 92. That is,the first extraction hole forming portion 97 is supported by the baseplate 92 in a cantilevered manner through the leg portion 101 a. Thesecond extraction hole forming portion 98 has a leg portion 101 b at therear end, and the leg portion 101 b is integrally formed with the baseplate 92 on the lower side of the base plate 92 and is hence integrallyformed with the base plate 92. That is, the second extraction holeforming portion 98 is supported by the base plate 92 in a cantileveredmanner through the leg portion 101 b.

As illustrated in FIG. 16B, the first extraction hole forming portion 97is provided with a first extraction hole forming portion concave portion102 at the rear of the extraction hole forming portion 96. On the frontside of the first extraction hole forming portion concave portion 102, afirst slit 103 and a second slit 104 are formed. The first and secondslits 103 and 104 are formed in elongated hole shapes that extend in theright-left direction, and the widths thereof in the forward-rearwarddirection are substantially the same as the width of the firstextraction hole forming portion concave portion 102. Furthermore, thefirst and second slits 103 and 104 are formed so that the widths of thefirst and second slits 103 and 104 are the same. The first and secondslits 103 and 104 are also formed so that, when the front end 6 a of thewet tissue continuing material body 6 passes therethrough, a resistanceis applied to the front end 6 a of the wet tissue continuing materialbody 6 that passes therethrough.

Furthermore, in the first extraction hole forming portion 97, a firstprotruding piece 105 is provided between the first extraction holeforming portion concave portion 102 and the first slit 103, and a secondprotruding piece 106 is provided between the first slit 103 and thesecond slit 104. The first protruding piece 105 includes a leftprotruding piece 105 a that extends from the left to the right and aright protruding piece 105 b that extends from the right to the left,and a first void 107 is provided between the left protruding piece 105 aand the right protruding piece 105 b. Further, the second protrudingpiece 106 includes a left protruding piece 106 a that extends from theleft to the right and a right protruding piece 106 b that extends fromthe right to the left, and a second void 108 is provided between theleft protruding piece 106 a and the right protruding piece 106 b. Thefirst and second voids 107 and 108 are formed to be located on thesubstantially straight line in the right-left direction.

The second extraction hole forming member 91 is provided with a secondextraction hole forming concave portion 109 on the front side of theextraction hole forming portion 96. In addition, the first and secondslits 103 and 104 are formed on the rear side of the first extractionhole forming portion concave portion 102. The configurations of thefirst and second slits 103 and 104, the first and second protrudingpieces 105 and 106, and the first and second voids 107 and 108 are thesame as those of the first extraction hole forming portion 97, and hencethe description thereof will not be repeated.

The first and second extraction hole forming portions 97 and 98 areformed at the lower surface of the base plate 92 so that the free endsthereof on the opposite sides to the leg portions 101 a and 101 b opposeeach other. That is, a free end 101 c of the first extraction holeforming portion 97 is formed to be positioned on the rear side inrelation to the leg portion 101 a, and a free end 101 d of the secondextraction hole forming portion 98 is formed to be positioned on thefront side in relation to the leg portion 101 b. A third void 110 isprovided between the free end 101 c of the first extraction hole formingportion 97 and the free end 101 d of the second extraction hole formingportion 98 so that the free end 101 c of the first extraction holeforming portion 97 and the free end 101 d of the second extraction holeforming portion 98 do not come into contact with each other when thefirst and second extraction hole forming portions 97 and 98 areelastically deformed. Further, the first and second extraction holeforming portions 97 and 98 are disposed so that the first and secondextraction hole forming portion concave portions 102 and 109 oppose eachother. As described above, the space formed by the first and secondextraction hole forming portion concave portions 102 and 109 becomes theextraction hole 111. That is, it can be said that the extraction hole111 in this embodiment is a hole having an elongated hole shape thatextends in the right-left direction, and the third void 110 is formed oneach of both ends in the right-left direction. In this embodiment, thethird void 110 is provided at substantially the center portion of theextraction hole forming member 91 in the forward-rearward direction, butthe position where the third void 110 is provided is not limitedthereto.

As illustrated in FIGS. 16A to 17C, a relief portion 112 is provided inthe extraction hole forming member 91. The relief portion 112 allows aportion of the front end 6 a of the wet tissue continuing material body6 which is not accommodated in the accommodation space 94 to be relievedinto the bag body 3 when the front end 6 a is pushed into theaccommodation space 94. The relief portion 112 is formed to besurrounded by the base plate 92, the leg portion 101 a, the first andsecond extraction hole forming portions 97 and 98, and the leg portion101 b to allow the accommodation space 94 and the internal space of thebag body 3 to communicate with each other. In addition, in thisembodiment, the relief portion 112 is formed on the left and right sidesof the first and second extraction hole forming portions 97 and 98 wherethe leg portions 101 a and 101 b are not formed, but the position wherethe relief portion 112 is formed may be a position other than theabove-described position. Furthermore, the size of the relief portion112 may be arbitrarily selected as long as the front end 6 a of the wettissue continuing material body 6 may move between the accommodationspace 94 and the internal space of the bag body 3. The number of reliefportions 112 may also be arbitrarily selected as long as the extractionhole forming portion 96 is supported by the base plate 92 in acantilevered manner.

Next, the operation of the wet tissue packaging unit according to thisembodiment will be described. As illustrated in FIG. 17A, the extractionhole forming portion 96 according to this embodiment is formed by thefirst and second extraction hole forming portions 97 and 98. The firstextraction hole forming portion 97 is formed so that the leg portion 101a provided on the front side of the first extraction hole formingportion 97 is formed integrally with the lower side of the base plate 92and the rear side of the first extraction hole forming portion 97becomes the free end 101 c. In addition, the second extraction holeforming portion 98 is formed so that the leg portion 101 b provided onthe rear side of the second extraction hole forming portion 98 is formedintegrally with the lower side of the base plate 92 and the front sideof the second extraction hole forming portion 98 becomes the free end101 d. As described above, the third void 110 is provided between thefree end 101 c of the first extraction hole forming portion 97 and thefree end 101 d of the second extraction hole forming portion 98.Furthermore, the extraction hole 111 is formed by the first extractionhole forming portion concave portion 102 provided in the free end 101 cof the first extraction hole forming portion 97 and the secondextraction hole forming portion concave portion 109 provided in the freeend 101 d of the second extraction hole forming portion 98.

Here, in the case that the user pinches the front end 6 a of the wettissue continuing material body 6 and raises the front end 6 a in the Ldirection illustrated in FIG. 17B, the first extraction hole formingportion 97 is elastically deformed in the M direction about or on theleg portion 101 a as the fulcrum at the side of free end 101 c by aforce, which is applied in the L direction to the first extraction holeforming portion concave portion 102 when the wet tissue continuingmaterial body is raised. In addition, in the second extraction holeforming portion 98, when the wet tissue is raised, the free end 101 d iselastically deformed in the M direction about the leg portion 101 b asthe fulcrum by a force, which is applied in the L direction to thesecond extraction hole forming portion concave portion 109.

Furthermore, after extracting the wet tissue 7, when the user pusheddown the front end 6 a in the N direction illustrated in FIG. 17C inorder to cause the front end 6 a of the wet tissue continuing materialbody 6 to be accommodated in the accommodation space 94, the firstextraction hole forming portion 97 is elastically deformed in the Odirection about or on the leg portion 101 a as the fulcrum at the sideof the free end 101 c by the force, which is applied to the firstextraction hole forming portion concave portion 102 and the like whenthe front end is moved in the O direction. Similarly, in the secondextraction hole forming portion 98, when the front end 6 a is moved inthe O direction, the free end 101 d is elastically deformed in the Odirection about the leg portion 101 b as the fulcrum by the force, whichis applied to the second extraction hole forming portion concave portion109 and the like.

As described above, according to the wet tissue packaging unit accordingto this embodiment, in addition to the effects of the wet tissuepackaging unit 1 according to the first embodiment described above,since the first extraction hole forming portion 97 is elasticallydeformed about the leg portion 101 a as the fulcrum and the secondextraction hole forming portion 98 is elastically deformed about the legportion 101 b as the fulcrum, ease of extraction when the front end 6 aof the wet tissue continuing material body 6 is extracted is largelyimproved.

In addition, when the front end 6 a of the wet tissue continuingmaterial body 6 is accommodated in the accommodation space 94, the firstextraction hole forming portion 97 is elastically deformed about the legportion 101 a as the fulcrum and the second extraction hole formingportion 98 is elastically deformed about the leg portion 101 b as thefulcrum, thereby widening the accommodation space 94.

Therefore, according to the wet tissue packaging unit according to thisembodiment, it is possible to largely improve ease of extraction of thewet tissue and ease of accommodation. Furthermore, according to the wettissue packaging unit according to this embodiment, when theaccommodation space 94 is widened, the relief portion 112 is alsowidened as well as the accommodation space 94. Therefore, according tothe wet tissue packaging unit according to this embodiment, it ispossible to further improve ease of accommodation of the wet tissue.

In addition, in the present specification, the example in which the lid5 is integrally molded with the extraction hole forming member 4 throughthe hinge portion 5 a is used for the description, but the lid 5 mayalso be molded separately from the extraction hole forming member 4. Inaddition, in the case where the lid 5 and the extraction hole formingmember 4 are molded integrally with each other, the lid 5 and theextraction hole forming member 4 may be formed through a portion otherthan the hinge portion 5 a, or may be formed without the hinge portion 5a or the portion other than the hinge portion 5 a interposedtherebetween.

Further, in the present specification, the fragile portion is a groovethat is thinner than the partitioning portion. However, when thepredetermined shear force is applied to the fragile portion, the fragileportion may be broken due to stress concentration on the fragileportion, and a shape other than the shape of this embodiment may bearbitrarily selected. Further, as a method of forming the fragileportion, an existing method may be arbitrarily selected to be applied.For example, the fragile portion may be formed using ultrasonic waves,or the fragile portion may be formed through pressurization using apress. Otherwise, the fragile portion may be formed using a laser, orthe fragile portion may be formed by a method other than theabove-described methods. Furthermore, although the fragile portion isformed through the integral molding, this embodiment is not limited tothe case of the integral molding.

Further, in the first, third, and fourth embodiments according to thepresent invention, the first and second slits are provided and the firstand second protruding pieces are provided in the extraction hole formingportion, and in the second embodiment, the first and second extractionslits are provided in the extraction hole forming portion. However,these are merely examples and may be appropriately changed withoutdeparting from the spirit of the present invention. Further, the sizesof the first and second slits, the first and second protruding pieces,and the extraction hole formed in the first, third, and fourthembodiments may be arbitrarily selected as long as the front end of thewet tissue continuing material body may be extracted and the front endmay pop up. Furthermore, the sizes of the extraction hole, the first andsecond extraction slits formed in the second embodiment may bearbitrarily selected as long as the front end of the wet tissuecontinuing material body may be extracted and the front end may pop up.

In the present specification, the example in which the extraction holeforming portion and the base plate are integrally formed with each otheris used for the description. However, the present specification is notlimited thereto, and the extraction hole forming portion and the baseplate may be separately formed from each other. Further, in the presentspecification, the extraction hole forming member is formed to becurved, but the present specification is not limited thereto.

The wet tissue packaging unit that has been described so far is merelyan example of the wet tissue packaging unit according to the presentinvention, and may be appropriately changed without departing from thespirit of the present invention.

REFERENCE SIGNS LIST

-   -   1 wet tissue packaging unit    -   2 opening    -   3 bag body (accommodation container)    -   4, 51, 71, 91 extraction hole forming member    -   5 lid    -   6 wet tissue continuing material body    -   7 wet tissue    -   10 separating portion (dividing portion)    -   23, 53, 74, 94 accommodation space    -   26, 54, 111 extraction hole    -   27, 78, 96 extraction hole forming portion    -   39 relief portion (communicating portion)    -   55 closing portion    -   97 first extraction hole forming portion    -   98 second extraction hole forming portion

1. A wet tissue packaging unit comprising: an accommodation containerthat accommodates a wet tissue continuing material body having adividing portion formed therein at a predetermined interval, andincludes an opening formed to draw out a wet tissue divided from the wettissue continuing material body at the dividing portion to the outside;an extraction hole forming member that is attached to the opening of theaccommodation container and includes an extraction hole forming portionhaving an extraction hole formed to apply a resistance when the wettissue continuing material body passes therethrough and an accommodationspace which accommodates a front end of the wet tissue continuingmaterial body that passes through the extraction hole; a lid that isprovided at the outside of the accommodation space so as to freely closeand open the accommodation space; and a communicating portion thatallows the accommodation space of the extraction hole forming member anda space in the accommodation container to communicate with each other inan area excluding the extraction hole; wherein the accommodation spaceexists between the lid and the extraction hole when the accommodationspace is closed by closing the lid, and the communicating portion isformed in a size in which, when the front end of the wet tissue that ispassed through the extraction hole and is drawn out from the wet tissuecontinuous body to the outside is pushed into the accommodation space,the front end can be pushed into the bag body from the accommodationspace and escaped therefrom.
 2. The wet tissue packaging unit accordingto claim 1, wherein the communicating portion is provided in aperipheral edge area of a bottom portion of the accommodation space. 3.The wet tissue packaging unit according to claim 2, wherein theextraction hole forming portion is formed in a plate that is convexlycurved toward the inner side of the accommodation container, and thecommunicating portion is formed by a convexly swollen area of theextraction hole forming portion.
 4. The wet tissue packaging unitaccording to claim 1, wherein the extraction hole forming portion of theextraction hole forming member is supported in a cantilevered manner,and the communicating portion is formed or is widened as a free end ofthe extraction hole forming portion is turned toward the internal spaceof the accommodation container on the cantilevered portion as thecenter.
 5. The wet tissue packaging unit according to claim 1, whereinthe extraction hole forming member is attached to the accommodationcontainer by allowing an attachment surface of the extraction holeforming member to face an inner surface of the accommodation container.6. The wet tissue packaging unit according to claim 1, wherein theextraction hole forming member is provided with slits at predeterminedpositions on both sides of the extraction hole along a predetermineddirection and at predetermined positions at an interval from theextraction hole, a protruding piece is formed between the slit and theextraction hole, and a void which connects the slit to the extractionhole is formed on the front end side of the protruding piece.